Antifriction bearing axle box



April 3, 1934. w. LEN Z ANTIFRICTION BEARING AXLE BOX Filed July 29, 1932 INVENTOR WILHELM LENZ {Patented Apr. 3, 1934 UNlTED STATES PATENT OFFICE ANTIFRICTION BEARING AXLEBOX Wilhelm Lena, Schweinfurt, Germany, assignor to Aktiebolaget Svenska Kullagerfabriken. Gottenborg, Sweden, a corporation of Sweden Application July 29, 1932, Serial No. 626,141 In Germany July 30, 1931 1 Claim. (Cl. 308-236) In order to facilitate the mounting of the width is variable, for example'by threading the bearings in anti-friction bearing axle boxes hav outer circumference oi the sleeve to engage ing two anti-friction bearings the inner rings threads on a surrounding circular sleeve. of the bearings are usually mounted on the axle In the drawing accompanyin this sp 5 .bymeans of taper sleeves. When mounting the cation two practicable embodiments of my in- 60 taper sleeve in the inner bearing the, inner ring vention are illustrated in which drawing: of the bearing abuts against the shouldertol' the Figure 1 shows in elevation the journal end axle. This bearing is of selfcontained type, and of an axle and in vertical longitudinal section a its outer ring is axially fixed relativeto the box, iou'rnal box and two substantially similar selfthereby axially locating the box in correct posialigning bearings mounted on the journals totion. The outer bearing is a free bearing, i. e. ether with a form ofdistance'sleeve, and

either its outer race is mounted axially floating Fig. 2 is'a similar view showing another form in the box or the bearing is made internally or distance sleeve, mounted between two cylinaxially floating. This bearing cannot be used dr-ical roller bearings.

as a locating bearing, since its inner ring abuts One formnf the invention is illustrated in Fig. 70

against. the taper sleeve of the innerbearing. 1, in whih the inner roller bearing 2, of self- This taper sleeve does not, however, in each case a i p is mounted d r ly on the talways assume the same position on th xl wardly tapering part 11 or the journal 4 without since the position will depend on the exactness the use of a tape sl ve. T ut r bearing 1,

of the taper and dimensions or th sleeve and also of self-aligning type, is mounted on the cy1inof the bore of the bearing. Since the outer beardrical Outer end ti 12 of the journ l y ing abuts against the sleeve of the inner bearing means of a taper sleeve 3. The outer ring of the as above mentioned, the definite position which bearing 2 is in this C mounted axially free it will assume when in place on the axle canwithin the axle box 5 while that of the bearing 1 not be precisely predetermined, is fixed. The axle box is thus positioned. by the 80 The inner bearing may b mounted directly bearing 1. The figure shows a form of the invenon the axle without the use of a i t t tion in which a distance'sleeve 10 is interposed I taper sleeve in which cas th tapered bore of between the inner rings of the bearings, this the inner ring of th bearing directly engages sleeve being of such a widththat the distance anoutwardly tapered portion of th journ L In between the centre 01' the axle box 5 and the our- 85) this manner it is possible to greatly strengthen shoulder 13 will in an cases be Very nearly f the journal, but the inner bearing can no longer" Same- It is therefore necessary at r mou tin serve to locate the axle box, since its position the hearing 2 oh the journal to determine on th tapered portion of t jour l cannot tance to a=certain reference shoulder as 8 on the be definitely predetermined. If the inner rin'g journal and dimension the Width of the distance of the outer bearing abuts against the inner ring Sleeve accordingly i of the inner bearing without a suitable interme- The upper half 9 1 lhhstmtes a h h t l th outer bearing cannot be used axle box, the only difference being that the width for locating th axle box Since its posmonwm of the distance sleeve is variable, it. being formed 40 depend on that taken up by the inner bearing of two parts 6 and 60 in screw threaded relation.

and will, theref r be indefimm After having measured the distance between the The purpose of t present invention is to mounted bearing 2 and the referenceshoulder as provide an axle box of the p described above, described above it is,.therefore, possible to ad ust in which the outer bearing can serve to locate the position of the outer hea'nhg 1 i respect.

the axle box. According to the invention to the reference shoulder on the axle ournal.

tance sleeve is interposed between the inner rings h 2 Illustrates form the mvehhon m of the bearings, this sleeve being of such a width whh/h the Sleeve 7 ehgages the shoulder The that the required distance between the centre required, distance Q the hearing 1 from a rof the axle box and th journal shoulder will ence shoulder on the journal, in this case the always be obtained independently of the location shoulder 13, i fixed y the Width of the Sleeve 105 of the inner bearing. The width of the distance The sleeve 7 is externally threaded and is pr sleeve is fixed after measuring the distance bevided with a internally e d d su d tween the face of the shoulder'and the inner face sleeve 9 which serves to support the inner ring of of the mounted inner bearing; The distance the bearing 22 on the tapering part of the journal.

sleeve can, however, also be so formed that its In the Figure 2 illustration there are shown no two cylindrical roller bearings 21 and 22. The

outer rings 23 and 24 of both of these hearings are mounted against 'free floating but owing to the construction of the outer race 23 this bearing will serve to locate the journal in relation to the axle box, the bearing 22 being of a floating construction.

bearing being mounted on the'tapering inboard journal portion and its outer race ring being mounted in the box, the inner race ring of the other bearing being mounted on the cylindrical outboard journal portion, a taper adapter sleeve interposed between these parts, the outer race ring of this bearing being axially located in the box, an inner distance sleeve interposed between the inner ring of the outboard bearing and the aforesaid outwardly facing shoulder, and an outer distance sleeve having screw threaded connection with the inner distance sleeve and adapted to engage the outboard end of the inboard inner race ring.-

WILHELM LENZ. 

